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Zorluk: OrtaSpanning Tree Protocol Operations

Place the standard IEEE 802.1D Spanning Tree Protocol (STP) port states in chronological sequence from initial link activation on an unconfigured switch interface to full user data transmission capability.

  1. 1Blocking State
  2. 2Listening State
  3. 3Learning State
  4. 4Forwarding State

Cevap

The correct chronological sequence of IEEE 802.1D STP port states is Blocking State, Listening State, Learning State, and Forwarding State.
Under standard IEEE 802.1D STP operations, an activated interface progresses through four distinct operational states in order: Blocking (prevents loops by receiving BPDUs only), Listening (exchanges BPDUs to determine root bridge and port roles), Learning (builds MAC address tables without forwarding user traffic), and Forwarding (fully processes user data frames and BPDUs).

Adım Adım Çözüm

1
Identify the initial state immediately following physical link establishment.
The port starts in the Blocking state to discard frames and listen for incoming BPDUs.
Immediate data forwarding upon link activation could cause bridging loops before topology information is evaluated.
2
Determine the second state after the initial Forward Delay timer expires.
The port transitions to the Listening state.
During Listening, the port actively transmits and receives BPDUs to participate in root bridge election and determine port roles without learning MAC addresses.
3
Determine the third state after the second Forward Delay timer expires.
The port transitions to the Learning state.
In the Learning state, the switch populates its MAC address table from incoming frame source addresses while continuing to hold user data frame forwarding.
4
Identify the final operational state.
The port enters the Forwarding state.
Once MAC table entry acquisition completes without loop detection, the port safely transitions into full user data frame processing.

Anahtar Kavram

Chronological IEEE 802.1D STP Port State Transitions
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Konular

Spanning Tree Protocol Operations

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